SOLUTION: Julian jogs 2 kilometers east, 4 kilometers north, and then 7 kilometers west. How far is Julian from his starting position, to the nearest tenth of a kilometer? What is the form

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Question 904124: Julian jogs 2 kilometers east, 4 kilometers north, and then 7 kilometers west.
How far is Julian from his starting position, to the nearest tenth of a kilometer?
What is the formula/equation to solve this question? Please and Thankyou :)

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
2 east -7 w= 5 west and 4 north
Now apply the pythagorean theorem.
a^2+b^2=c^2
5^2+4^2=c^2
25+14=c^2
38=c^2
sqrt(39)=c
c=6.244 km